142422251 has 8 divisors (see below), whose sum is σ = 145377600. Its totient is φ = 139487040.

The previous prime is 142422239. The next prime is 142422263. The reversal of 142422251 is 152224241.

It is an interprime number because it is at equal distance from previous prime (142422239) and next prime (142422263).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142422251 - 2²⁶ = 75313387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142422281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9695 + ... + 19463.

It is an arithmetic number, because the mean of its divisors is an integer number (18172200).

Almost surely, 2^142422251 is an apocalyptic number.

142422251 is a deficient number, since it is larger than the sum of its proper divisors (2955349).

142422251 is an equidigital number, since it uses as much as digits as its factorization.

142422251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10069.

The product of its digits is 1280, while the sum is 23.

The square root of 142422251 is about 11934.0793947418. The cubic root of 142422251 is about 522.2269519532.

Adding to 142422251 its reverse (152224241), we get a palindrome (294646492).

The spelling of 142422251 in words is "one hundred forty-two million, four hundred twenty-two thousand, two hundred fifty-one".